Device for dispensing a plurality of fluid products

A method of assembling a bottle for dispensing fluid products, the method comprising the steps of:

• inserting a dispensing device into a tank, the dispensing device comprising:
• a plurality of containers, each container storing one fluid product, at least one of the containers having an inlet valve;
• a unique pump provided with a dosage chamber enclosing a dose of mixture of the fluid products, and comprising an actuating member;
• a manifold associating the pump to the plurality of containers for dispensing the fluid products, said manifold comprising a plurality of hollow tubes, each tube extending into a container and forming a channel for the flow of the fluid product from the container towards the pump;
• and,
• a sleeve;
• a purge bushing located in the manifold and receiving the pump;
• characterized in that the tubes of the manifold are rigid and at least one tube of the manifold comprises means for regulating the volumetric ratio of the fluid product flow, these regulating means being integrated inside the rigid tube, wherein during the inserting, the purge bushing is in a first position so as to seal the containers having an inlet valve;
• and,
• interlocking the sleeve on a neck of said tank so as to lock the dispensing device in the tank and generate an axial displacement of the subassembly composed of the sleeve, the pump and the purge bushing, in relation to the subassembly composed of the manifold, the containers and the tank, the purge bushing being displaced in a second position so as to unseal the containers having an inlet valve.